CVE-2021-23814

Summary

This affects versions of the package unisharp/laravel-filemanager before 2.6.2. The upload() function does not sufficiently validate the file type when uploading. An attacker may be able to reproduce the following steps: 1. Install a package with a web Laravel application. 2. Navigate to the Upload window 3. Upload an image file, then capture the request 4. Edit the request contents with a malicious file (webshell) 5. Enter the path of file uploaded on URL - Remote Code Execution Note: Prevention for bad extensions can be done by using a whitelist in the config file(lfm.php). Corresponding document can be found in here.

Affected Software

Weaknesses

• CWE-94: Arbitrary File Upload

ADP Enrichment

CVE Program Container

Additional References

• https://snyk.io/vuln/SNYK-PHP-UNISHARPLARAVELFILEMANAGER-1567199
• https://github.com/UniSharp/laravel-filemanager/blob/master/src/Controllers/UploadController.php%23L26
• https://github.com/UniSharp/laravel-filemanager/issues/1113#issuecomment-1812092975

References

• https://security.snyk.io/vuln/SNYK-PHP-UNISHARPLARAVELFILEMANAGER-1567199
• https://github.com/UniSharp/laravel-filemanager/blob/master/src/Controllers/UploadController.php%23L26
• https://github.com/UniSharp/laravel-filemanager/releases/tag/v2.5.1
• https://github.com/UniSharp/laravel-filemanager/issues/1113
• https://github.com/UniSharp/laravel-filemanager/releases/tag/v2.6.2

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